/* -*-c++-*- */
/* osgGIS - GIS Library for OpenSceneGraph
 * Copyright 2007-2008 Glenn Waldron and Pelican Ventures, Inc.
 * http://osggis.org
 *
 * osgGIS is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

#ifndef _OSGGIS_RTREE_SPATIAL_INDEX_H_
#define _OSGGIS_RTREE_SPATIAL_INDEX_H_ 1

#include <osgGIS/SpatialIndex>
#include <osgGIS/FeatureStore>
#include <osgGIS/RTree>

namespace osgGIS
{
	/* (internal class)
     *
	 * R-Tree implementation of a spatial index.
	 */
	class RTreeSpatialIndex : public osgGIS::SpatialIndex
	{
	public:
        /**
         * Construct a new R-Tree spatial instance and populate it with
         * the data in a feature store.
         *
         * @param store
         *      Feature store for which to build index
         */
		RTreeSpatialIndex( FeatureStore* store );
		
	public: // SpatialIndex
	
	    FeatureCursor getCursor( const GeoExtent& extent, bool match_exactly =false );
	    
	    const GeoExtent& getExtent() const;

	public:
		virtual ~RTreeSpatialIndex();

	private:
		osg::ref_ptr<FeatureStore> store;		
		osg::ref_ptr<RTree<FeatureOID> > rtree;
		GeoExtent extent;
		
		bool buildIndex();
	};
}

#endif // _OSGGIS_RTREE_SPATIAL_INDEX_H_
